Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: unknown

Region: unknown

Country: United Kingdom of Great Britain and Northern Ireland

Internet Service Provider: Microsoft Limited

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attackbotsspam
Jun 28 13:31:40 localhost sshd\[16573\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.140.64.37  user=root
Jun 28 13:31:42 localhost sshd\[16573\]: Failed password for root from 51.140.64.37 port 58499 ssh2
Jun 28 13:52:11 localhost sshd\[16900\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.140.64.37  user=root
...
2020-06-28 22:02:23
attack
$f2bV_matches | Triggered by Fail2Ban at Vostok web server
2020-06-28 15:31:37
attack
Jun 27 15:12:52 pkdns2 sshd\[61225\]: Invalid user testuser from 51.140.64.37Jun 27 15:12:54 pkdns2 sshd\[61225\]: Failed password for invalid user testuser from 51.140.64.37 port 46392 ssh2Jun 27 15:18:54 pkdns2 sshd\[61586\]: Invalid user testuser from 51.140.64.37Jun 27 15:18:56 pkdns2 sshd\[61586\]: Failed password for invalid user testuser from 51.140.64.37 port 1561 ssh2Jun 27 15:21:58 pkdns2 sshd\[61842\]: Invalid user testuser from 51.140.64.37Jun 27 15:22:00 pkdns2 sshd\[61842\]: Failed password for invalid user testuser from 51.140.64.37 port 11767 ssh2
...
2020-06-27 20:58:27
attackspambots
Jun 25 09:12:49 Ubuntu-1404-trusty-64-minimal sshd\[29347\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.140.64.37  user=root
Jun 25 09:12:50 Ubuntu-1404-trusty-64-minimal sshd\[29347\]: Failed password for root from 51.140.64.37 port 31629 ssh2
Jun 26 00:43:31 Ubuntu-1404-trusty-64-minimal sshd\[13139\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.140.64.37  user=root
Jun 26 00:43:33 Ubuntu-1404-trusty-64-minimal sshd\[13139\]: Failed password for root from 51.140.64.37 port 9812 ssh2
Jun 26 06:06:11 Ubuntu-1404-trusty-64-minimal sshd\[23269\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.140.64.37  user=root
2020-06-26 12:16:33
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 51.140.64.37
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 59069
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;51.140.64.37.			IN	A

;; AUTHORITY SECTION:
.			322	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020062502 1800 900 604800 86400

;; Query time: 90 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Jun 26 12:16:25 CST 2020
;; MSG SIZE  rcvd: 116
Host info
Host 37.64.140.51.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 37.64.140.51.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
5.101.151.41 attackbotsspam
Oct  5 03:01:07 web9 sshd\[2492\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.151.41  user=root
Oct  5 03:01:09 web9 sshd\[2492\]: Failed password for root from 5.101.151.41 port 53690 ssh2
Oct  5 03:05:34 web9 sshd\[2998\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.151.41  user=root
Oct  5 03:05:36 web9 sshd\[2998\]: Failed password for root from 5.101.151.41 port 10128 ssh2
Oct  5 03:09:06 web9 sshd\[4045\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.151.41  user=root
2020-10-05 21:17:02
61.129.251.247 attackspambots
1433/tcp 445/tcp...
[2020-08-07/10-04]12pkt,2pt.(tcp)
2020-10-05 21:02:32
46.172.222.39 attackbotsspam
445/tcp
[2020-10-04]1pkt
2020-10-05 21:16:46
91.34.69.27 attack
Oct  4 22:34:51 pl3server sshd[3300]: Invalid user pi from 91.34.69.27 port 41862
Oct  4 22:34:51 pl3server sshd[3301]: Invalid user pi from 91.34.69.27 port 41864
Oct  4 22:34:51 pl3server sshd[3300]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.34.69.27
Oct  4 22:34:51 pl3server sshd[3301]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.34.69.27
Oct  4 22:34:53 pl3server sshd[3300]: Failed password for invalid user pi from 91.34.69.27 port 41862 ssh2
Oct  4 22:34:53 pl3server sshd[3301]: Failed password for invalid user pi from 91.34.69.27 port 41864 ssh2
Oct  4 22:34:53 pl3server sshd[3300]: Connection closed by 91.34.69.27 port 41862 [preauth]
Oct  4 22:34:53 pl3server sshd[3301]: Connection closed by 91.34.69.27 port 41864 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=91.34.69.27
2020-10-05 21:12:07
218.92.0.250 attack
Oct  5 09:37:47 NPSTNNYC01T sshd[12639]: Failed password for root from 218.92.0.250 port 19789 ssh2
Oct  5 09:37:50 NPSTNNYC01T sshd[12639]: Failed password for root from 218.92.0.250 port 19789 ssh2
Oct  5 09:37:54 NPSTNNYC01T sshd[12639]: Failed password for root from 218.92.0.250 port 19789 ssh2
Oct  5 09:37:57 NPSTNNYC01T sshd[12639]: Failed password for root from 218.92.0.250 port 19789 ssh2
...
2020-10-05 21:40:15
223.31.191.50 attack
Banned for a week because repeated abuses, for example SSH, but not only
2020-10-05 21:39:05
213.175.77.10 attackbotsspam
Telnet/23 MH Probe, Scan, BF, Hack -
2020-10-05 21:03:44
202.137.142.159 attack
52869/tcp 52869/tcp 52869/tcp
[2020-10-02/03]3pkt
2020-10-05 21:09:08
24.244.135.181 attackspam
5555/tcp
[2020-10-04]1pkt
2020-10-05 21:40:53
176.100.102.150 attack
20/10/5@05:17:40: FAIL: Alarm-Intrusion address from=176.100.102.150
...
2020-10-05 21:08:00
103.196.202.38 attackbots
Automatic report - Banned IP Access
2020-10-05 21:30:13
110.16.76.213 attackspam
Failed password for invalid user os from 110.16.76.213 port 12962 ssh2
2020-10-05 21:04:31
110.80.142.84 attackspam
20 attempts against mh-ssh on echoip
2020-10-05 21:13:40
222.186.180.130 attack
Oct  5 14:53:49 mail sshd[8516]: Failed password for root from 222.186.180.130 port 31125 ssh2
2020-10-05 21:09:51
103.133.104.215 attackspam
Automatic report - Banned IP Access
2020-10-05 21:22:55

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